diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 7b7a14abba28e2..a8bc02bb339f9f 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2323,12 +2323,16 @@ static int neigh_dump_table(struct neigh_table *tbl, struct sk_buff *skb,
 
 	err = nlmsg_parse(nlh, sizeof(struct ndmsg), tb, NDA_MAX, NULL, NULL);
 	if (!err) {
-		if (tb[NDA_IFINDEX])
+		if (tb[NDA_IFINDEX]) {
+			if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32))
+				return -EINVAL;
 			filter_idx = nla_get_u32(tb[NDA_IFINDEX]);
-
-		if (tb[NDA_MASTER])
+		}
+		if (tb[NDA_MASTER]) {
+			if (nla_len(tb[NDA_MASTER]) != sizeof(u32))
+				return -EINVAL;
 			filter_master_idx = nla_get_u32(tb[NDA_MASTER]);
-
+		}
 		if (filter_idx || filter_master_idx)
 			flags |= NLM_F_DUMP_FILTERED;
 	}